Abstract
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 503:99-109 (2014) - DOI: https://doi.org/10.3354/meps10735 Planktonic predation risk varies with prey life history stage and diurnal phase K. A. Kerr1,2,3,*, A. Cornejo2,4, F. Guichard1,3, R. Collin2,3 1Department of Biology, McGill University, 1205 Docteur Penfield, Montréal, Québec H3A 1B1, Canada 2Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Panamá, Republic of Panama 3McGill-STRI Neotropical Environment Option (NEO), Faculty of Science, McGill University, Montréal, Québec H3A 2T6, Canada 4Department of Biology and Chemistry, University of Bremen, Bibliothekstraße 1, Bremen 28359, Germany *Corresponding author: kecia.kerr@mail.mcgill.ca ABSTRACT: Predation risk is believed to shape many aspects of the behavior, morphology and life history of marine organisms. The timing of synchronous larval release, postlarval migrations to adult habitat and diurnal vertical migrations are all considered adaptations to predictable variations in predation risk. However, despite the fact that predation risk is expected to vary predictably over time, this variation remains poorly understood for planktonic animals in the field. In this study, we conducted dock-based predation risk assays using tethered brine shrimp Artemia franciscana. We tested for the combined effects of prey life history stage and diurnal phase by measuring loss of adult and larval tethered individuals. We sampled during day and night, and during large and small amplitude tides on the Pacific coast of Panama. On the Caribbean coast of Panama and the Atlantic coast of Florida (where tidal amplitude is smaller), we sampled during day and night but did not test for an effect of tidal amplitude. Although predation risk differed between sites, the trends were the same at all 3 docks. Predation risk was significantly higher during the day than at night for larvae, whereas adults experienced the opposite trend in risk across the diurnal cycle, although the difference was not significant. Our results demonstrate a temporal gradient in planktonic predation risk across the diurnal cycle that depends on prey life history stage. KEY WORDS: Predation risk · Plankton · Diurnal cycle · Size-dependent predation · Plankton tethering unit · Predator-prey interaction · Size refugia Full text in pdf format PreviousNextCite this article as: Kerr KA, Cornejo A, Guichard F, Collin R (2014) Planktonic predation risk varies with prey life history stage and diurnal phase. Mar Ecol Prog Ser 503:99-109. https://doi.org/10.3354/meps10735 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 503. Online publication date: April 29, 2014 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2014 Inter-Research.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
